A new powder metallurgical method for the production of foamed metals
with very low apparent densities is described. The mechanical properti
es of foamed aluminium are investigated. The compressive strength and
elastic modulus of these materials depend strongly on the apparent den
sity. The different types of dependence are discussed and compared to
theoretical models. From the properties, several potential application
s of foamed metals are derived which make use of the unique mechanical
, physical and technological features of this class of cellular solids
.